01 Record

CVE-2026-74269

bnxt: fix head underflow on XDP head-grow

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

bnxt: fix head underflow on XDP head-grow

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 51.9% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Received. NVD last modified this record on 2026-10-21.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-08-15 05:57Z2 MO AGO

Last updated

2026-10-21 12:45Z8 DAYS AGO

Reserved

2026-08-15

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-124Buffer Underwrite ('Buffer Underflow')Base

Data version

5.2

Document digest

be5671be339948349dc654389b8e2bc20d1ee46c2a5ed970ba412f713846693c

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxf6974b4c2d8e1062b5a52228ee47293c15b4ee1e to < 3e8f3959a7fd28461b8cd9708c21286b4250b77a, f6974b4c2d8e1062b5a52228ee47293c15b4ee1e to < ff34e5a26a26c92142afea11455e259c4c4c617b, f6974b4c2d8e1062b5a52228ee47293c15b4ee1e to < 4c03275bc4435cc8e25f7f3f08aff58c0e783d8d, f6974b4c2d8e1062b5a52228ee47293c15b4ee1e to < bb72b1c6755631c74b7e0878ee55bb81c06776c0, f6974b4c2d8e1062b5a52228ee47293c15b4ee1e to < e26657fe3b85c068b01f42bb0c602f242d643ba9, e9f11bfc03fb0d3c86f91b8ae945bb10f7e19c16, ae0e135dc900827687ecc684c2bbb57aae48d318, 6.1.45 to < 6.2, 6.4.10 to < 6.5, 6.5—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/3e8f3959a7fd28461b8cd9708c21286b4250b77a
git.kernel.orghttps://git.kernel.org/stable/c/ff34e5a26a26c92142afea11455e259c4c4c617b
git.kernel.orghttps://git.kernel.org/stable/c/4c03275bc4435cc8e25f7f3f08aff58c0e783d8d
git.kernel.orghttps://git.kernel.org/stable/c/bb72b1c6755631c74b7e0878ee55bb81c06776c0
git.kernel.orghttps://git.kernel.org/stable/c/e26657fe3b85c068b01f42bb0c602f242d643ba9

07 Fixed in

Debian 12

linux
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.1.5-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.